Studies on the Ionic Interaction in lonomer Solution by FTIR and ESR

Abstract

Abstract: FTIR and ESR have been used to study the influence of the xylene/hexanol ratio on the cation-anion and cation-cation interactions in sulfonated EPDMionomers.FTIRresults show that the interaction between the solvated metallic ions and SO₃^- is in the order Li<Na<K,while for the ions without solvation the order is the reverse (Li>Na>K).The ESRspectra of SEPDM-Mn ionomers indicate that both isolated Mn²⁺ and Mn²⁺ cluster exist in the solution.The Mn²⁺ cluster is favored in less hexanol cosolvent and at high temperature,which is believed to be the reason for the viscosity increase of the ionomer solution with increasing temperature.

Key words: Ionomer, Sulfonated EPDM(SEPDM), FTIR, ESR

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FENG Ke, OUYANG Wei, LI Zhuo-Mei . Studies on the Ionic Interaction in lonomer Solution by FTIR and ESR[J]. Chem. J. Chinese Universities, 1992, 13(8): 1149.

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Studies on the Ionic Interaction in lonomer Solution by FTIR and ESR

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